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    CVE-2026-34544

    OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.

    Published:Apr 1, 2026
    Last Modified:Apr 8, 2026
    EPS:Apr 1, 2026
    EPSS Score:0.00015
    CVSS Score:7.3

    Affected Products

    Vendor
    Academysoftwarefoundation
    Product
    Openexr
    Vendor
    Openexr
    Product
    Openexr

    Exploits

    https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h762-rhv3-h25v

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-59186 (CVSS 7.1) — OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion …
    CVE-2026-54920 (CVSS 0) — OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion …
    CVE-2026-45696 (CVSS 8.3) — OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion …
    CVE-2026-44663 (CVSS 6.1) — OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion …
    CVE-2026-42217 (CVSS 6.3) — OpenEXR provides the specification and reference implementation of the EXR file format, an image storage forma…
    CVE-2026-42216 (CVSS 8.8) — OpenEXR provides the specification and reference implementation of the EXR file format, an image storage forma…
    CVE-2026-41142 (CVSS 8.8) — OpenEXR provides the specification and reference implementation of the EXR file format, an image storage forma…
    CVE-2026-40250 (CVSS 8.4) — OpenEXR provides the specification and reference implementation of the EXR file format, an image storage forma…
    CVE-2026-40244 (CVSS 8.4) — OpenEXR provides the specification and reference implementation of the EXR file format, an image storage forma…
    CVE-2026-39886 (CVSS 5.3) — OpenEXR provides the specification and reference implementation of the EXR file format, an image storage forma…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High